Facebook Login Integration :
It is used to login to Facebook and obtain basic information of User such as Name, Facebook ID, Email, Birthday...
Check app for sample
SDK version : 4.12.0
Goto developers.facebook.com and create an application.
Follow the process and add key hash. (Easier way of adding key hash is search for "KeyHash" in log. I already added a logic to get keyhash programatically in LoginActivity)
Get the facebook app ID and add it to your strings.xml